Stem winding and setting mechanism.



A. SIM. STEM WINDING AND SETTING MEGHANISM.

APPLICATION FILED JUNE 3, 1909.

Patented May 9, 1911.

UNTTED STATES PATENT @FFTCE.

ALEXANDER SIM, OF EAST MILTON, MASSACHUSETTS.

STEM WINDING AND SETTING MECHANISM.

To all whom it may concern:

Be it known that I, ALEXANDER SIM, a citizen of the United States,residing at East Milton, in the county of Norfolk and State ofMassachusetts, have invented new and useful Improvements in Stem Windingand Setting Mechanism, of which the following is a specification.

This invention relates to improvements in stem winding and settingwatches and more particularly to the winding and setting mechanism, andthe object is to provide a watch of this class in which thereciprocating member for changing the mechanism from winding to settingposition and vice versa shall be in its outermost position when themechanism is in its winding position so that it shall be possible toprovide said member with means such as a ring for attaching the watch toa chain or chatelaine so that the watch may be suspended therefromwithout danger of the mechanism being accidentally changed from windingto setting position. In the attainment of this object I have produced awinding and setting mechanism including a hollow stem and crown in whichis located an actuating member projecting outwardly beyond the crown,this actuating member constituting a. swivel having thereon a ringserving as a means of attaching the watch to a chain or chatelaine.

The invention consists in the novel fea tures of construction and in thecombination and arrangement of parts set forth in the followingspecification and particularly pointed out in the appended claims.

Referring to the drawing: Figure 1 is an elevation of a part of a watchmovement embodying my invention, the case center being shown in section,the parts being shown in their normal position. Fig. 2 is a sectionalView taken in the plane of the axis of the stem and crown, showing theparts in their normal or winding position. Fig. 3 is a sectional viewsimilar to Fig. 2, showing the parts in the setting position. Fig. i isa sectional view taken on line 4-4 of Fig. 8. Fig. 5 is a sectional viewtaken on line 5-5 of Fig. 3.

Like numerals refer to like parts through-. out the several views of thedrawing.

Referring to the drawing, 10 is the watch case center, 11 is themovement and 12 is the crown which is journaled in a suitable bearingprovided in the case center. The crown 12 which is provided with acylin- Specification of Letters Patent.

Application filed June 3, 1909.

Patented May 9, 1911. Serial No. 499,959.

drical recess 13 is secured to a hollow stem 14: in any suitable manneras by means of a screw 15 formed on the stem and having screw-threadedengagement with the crown. Connected to the stem 14 is ahollow windingarbor 16 having therein a square recess 17 in which is located a squareprojection 18 formed 011 the stem 14, whereby said stem and said arborare non-rotatably connected to each other, but are capable of beingwithdrawn one from the other when it is desired to disassemble theparts.

The crown 12, stem 1 1, and arbor 16 when taken together constitute ineffect a single rotatable body extending through the case at itsopposite ends, respectively, and this body is referred to in the claimsas a winding and setting sleeve.

The stem 14%, it will be observed, must be introduced into its placefrom the inside of the case center 10 and the crown 12 introduced fromthe outside and said parts when screwed together are held againstlongitudinal displacement in their respective bearings by an annularflange 19 located between the small end of the stem 12 and a flange 20formed upon the stem '14. Loosely mounted upon the winding arbor 16 is awinding pinion 21 which is held against longitudinal displacement uponsaid arbor by the engagement of said pinion with the walls of a recess22 in the movement 11. This winding pinion, it will be understood, willin practice form a part of the usual winding train of the movement.

The winding pinion 21 is provided with a series of ratchet clutch teeth23 adapted to normally interengage with a corresponding series of teeth21 formed upon a sleeve 25, said sleeve being slida-bly and nonrotatablymounted upon the winding arbor 1G in any convenient manner as byproviding said sleeve with a square hole 26 in which is located a squarepart 27 of the winding arbor. It will be readily understood that whenthe teeth 24 are held in engagement with the teeth 23 and the crown 12is rotated in the proper direction, the winding pinion 21 will berotated therewith and when the teeth 24 are held out of engagement withthe teeth 23 the winding arbor 16 will turn freely within said pinionwithout rotating the same.

Formed ,on the lower end of the sleeve 25 is a crown gear 28 adapted tomesh with a setting pinion 29 which will, in practice,

be connected in any usual or desired manner to the hands of the watch.When the sleeve 25 is moved to carry the clutch teeth 24': out ofengagement with the clutch teeth 23 the teeth of the crown gear 28 aremoved into mesh with those of the setting pinion 29. To accomplish thisthe sleeve 25 is provided with a circumferential groove 30 in which islocated one end of a lever 31 pivoted at 32 on the movement 11, saidlever ongaging at its other end a lever pivoted at 34:, the latter leverbearing against a head 35 formed on a sliding pin 36 located within thehollow arbor 16, the upper end of said pin engaging the lower end of anactuating member 37 extending through the crown 12 and stem 14-. The pinconstitutes in effect a part of the actuating member 37 it being formedseparate therefrom. for convenience in manufacturing and assembling theparts.

The actuating member 37 has formed thereon or fast thereto a head 38having thereon a ring 39 serving as a means of attachment to a chain orchatelaine, not shown, the normal position of this head being shown inFigs. 1 and Located in the recess 13 is a sleeve 4E0 secured to thecrown 12 in any suitable manner as, for example by convenientscrew-threaded engagement therewith, as shown, said sleeve beingprovided with a series of resilient arms il extending between twoannular flanges 12 and 43 formed on the actuating member 3", the flange4:2 having two oppositely beveled or frusto-conical surfaces whose angleis such that when the ring 39 is grasped and pushed forcibly downwardfrom the position shown in Figs. 1 and 2, the resilient arms etl yieldand allow the llange 1-2 to pass therebeyond into the position shown inFig. 3. hen this occurs the pin 36 is forced downwardly, thereby rockingthe lever upon its pivot, said lever acting in turn to rock the lever 31upon its pivot and thus the sleeve 25 is carried downwardly into theposition shown in Fig. 3 so that the teeth 2a are moved out ofengagement with the teeth 23 and the teeth of the crown gear 28 aremoved into engagement with the teeth of the setting pinion 2f). When theparts are thus positioned the crown 12 may be rotated in eitherdirection to cause the rotation of the setting pinion 29 in the properdirection to set the hands,

after whiohthe parts are returned to their normal posltion by graspingthe ring 39 and pulling the actuating member 37 forcibly upward thelingers 4L1 yielding to allow the beveled flange P2 to pass therebeyondinto the position shown in Figs. 1 and 2. Nhen the actuating member 37is in this position the clutch teeth 2 1 are held in yielding engagementwith the teeth 22) by a helical compression spring 1% bearing at one endagainst the lever 31 and at its other end against the lever 33, thearrangement being such that rotation of the crown 12 in one directioncauses a positive rotation of the winding pinion 21 and rotation of saidcrown in the opposite direction causes the rotating sleeve to yielddownwardly against the tension of the spring l-l: thus allowing theteeth 24. to slip by the teeth 93. The winding arbor 16 is supported andjournaled at its lower end in a bearing 4:5 having a base 46 located ina recess a7 provided therefor in the plate of the watch movement 11.

H a viug thus described my invention, what I claim and desire by LettersPatent to secure is:

1. A stem winding and setting mechanism having, in combination, a case,a hollow rotatable winding and setting sleeve extending through saidcase at its opposite ends, respectively, a winding pinion, a settingpinion, driving means connected to and driven by said sleeve, andshiftable actuating means distinct from said driving means and saidsleeve and extending through the interior of said sleeve and beyondopposite ends thereof and adapted to move said driving means intodriving connection with said winding pinion or said setting pinion.

2. A stem winding and setting mechanism having, in combination, a case,a rotatable winding and setting sleeve extending entirely through saidcase into the interior thereof and to the exterior thereof, a windingpinion a setting pinion, driving means connected to and driven by saidsleeve, longitudinally shiftable actuating means rotatably mounted insaid sleeve adapted to move said driving means into driving connectionwith said winding pinion or said' setting pinion, and means to normallyhold said actuating means in fixed position.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

ALEXANDER SIM.

i i i tnesses LOUIS A. Jones, SYDNEY E. TAFT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

